Allow TranslateRanker to override decisions taken by heuristics.

components/translate/core/browser/translate_manager.h

Index: components/translate/core/browser/translate_manager.h
diff --git a/components/translate/core/browser/translate_manager.h b/components/translate/core/browser/translate_manager.h
index a6b19e3b24011ce837309cc63e392e3f05668a56..ec79ca8fb327d230a882caebbcf6cc29fb1c6440 100644
--- a/components/translate/core/browser/translate_manager.h
+++ b/components/translate/core/browser/translate_manager.h
@@ -118,6 +118,12 @@ class TranslateManager {
   // defined by metrics::TranslateEventProto::EventType.
   void RecordTranslateEvent(int event_type);
 
+  // Record a decision of the given |event_type| that has been
+  // overriden by translate ranker using the currently saved
+  // |translate_event_| as context. |event_type| must be one of the
+  // values defined by metrics::TranslateEventProto::EventType.
+  void RecordDecisionOverride(int event_type);
+
   // By default, don't offer to translate in builds lacking an API key. For
   // testing, set to true to offer anyway.
   static void SetIgnoreMissingKeyForTesting(bool ignore);